CN101998483B - Method and device for configuring measurement time for home base station - Google Patents
Method and device for configuring measurement time for home base station Download PDFInfo
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- CN101998483B CN101998483B CN200910161962.4A CN200910161962A CN101998483B CN 101998483 B CN101998483 B CN 101998483B CN 200910161962 A CN200910161962 A CN 200910161962A CN 101998483 B CN101998483 B CN 101998483B
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Abstract
The invention discloses a method and a device for configuring measurement time for a home base station. The method comprises the following steps of: determining uplink and downlink time slot proportional configuration information of a system; and configuring measurement time length for measurement for the home base station. The invention can configure the measurement time for the home base station so as to measure an ambient wireless environment.
Description
Technical field
The present invention relates to mobile communication technology field, especially relate to a kind of method for the Home eNodeB allocating and measuring time and device thereof, a kind of method for the Home eNodeB allocating and measuring cycle and device thereof, a kind of method and device thereof for Home eNodeB allocating and measuring time original position.
Background technology
Home eNodeB is a kind of Novel base station, is mainly towards family market, the small base station equipment of being bought and being installed by user.Because the randomness deployment of Home eNodeB will be introduced certain interference, in order to suppress the performance of interference, raising system, need to configure certain Measuring Time (Measurement gap) for Home eNodeB, so that wireless environment around is regularly detected, to select suitable operating frequency and transmitting power.
In addition, for TDD system, because up-downgoing data are all to transmit in identical frequency resource, Network Synchronization will cause macro base station and Home eNodeB if can not well be carried out, and cross time-slot between Home eNodeB disturbs (being base station interference base station), will badly influence thus the performance of system, synchronously a basic premise of the normal operation of TDD system as can be seen here, due to the restriction of the factor such as deployed environment and cost of Home eNodeB, often be difficult to directly be undertaken synchronously by receiving GPS positioning system signal, therefore utilize air interface to carry out the synchronous essential synchronization scenario that has substantially become TDD Home eNodeB at present, just require Home eNodeB must utilize certain Measuring Time to go to intercept macro base station around or the down-going synchronous information of Home eNodeB and carry out air interface synchronization, broadcast message, pilot frequency information etc.
As fully visible, no matter be to suppress disturb or carry out Network Synchronization, all need to configure certain Measuring Time so that wireless environment is around measured for Home eNodeB.But at present the standardization body such as 3GPP and Femto forum also not yet to how for specifying Home eNodeB allocating and measuring time and measuring period.
Summary of the invention
The embodiment of the present invention provides a kind of method and device thereof for the Home eNodeB allocating and measuring time, in order to be embodied as the Home eNodeB allocating and measuring time so that wireless environment is around measured.
The embodiment of the present invention also provides a kind of method for the Home eNodeB allocating and measuring cycle and device thereof, in order to be embodied as the Home eNodeB allocating and measuring cycle so that wireless environment is around measured.
Corresponding, the embodiment of the present invention also provides a kind of method and device thereof for Home eNodeB allocating and measuring time original position.
The embodiment of the present invention provides a kind of method for the Home eNodeB allocating and measuring time, comprising: the uplink and downlink timeslot ratio configuration information of determining system; According to definite uplink and downlink timeslot ratio configuration information, for Home eNodeB is configured for the Measuring Time length of measuring.
Corresponding, the embodiment of the present invention also provides a kind of device for the Home eNodeB allocating and measuring time, comprises the unit of the uplink and downlink timeslot ratio configuration information for determining system; For according to definite uplink and downlink timeslot ratio configuration information, for Home eNodeB is configured for the unit of the Measuring Time length of measuring.
The embodiment of the present invention also provides a kind of method for the Home eNodeB allocating and measuring cycle, and comprise and determine the desired synchronization accuracy information of Home eNodeB, and the crystal oscillator stability information of definite Home eNodeB self; According to definite synchronization accuracy information and crystal oscillator stability information, for Home eNodeB is configured for the measuring period of measuring.
Corresponding, the embodiment of the present invention also provides a kind of device for the Home eNodeB allocating and measuring cycle, and it comprises: for determining the unit of the desired synchronization accuracy information of Home eNodeB, and for determining the unit of crystal oscillator stability information of Home eNodeB self; For according to definite synchronization accuracy information and crystal oscillator stability information, for Home eNodeB is configured for the unit of the measuring period of measuring.
The embodiment of the present invention also provides a kind of method for Home eNodeB allocating and measuring time original position, comprise: measuring for Home eNodeB being carried out to the downlink reference signal process to be measured that synchronous target BS sends, successively coherent detection is carried out in the footpath of each reference symbol to be measured in receive window, obtain the footpath that first exceedes the reference symbol to be measured of detection threshold; The initial time position of the footpath of the reference symbol to be measured that detection is obtained in receive window, the initial time position as configuration to the Measuring Time of Home eNodeB.
Corresponding, the embodiment of the present invention also provides a kind of device for Home eNodeB allocating and measuring time original position, comprise: for measuring for Home eNodeB being carried out to the downlink reference signal process to be measured that synchronous target BS sends, successively coherent detection is carried out in the footpath of each reference symbol to be measured in receive window, obtain the unit that first exceedes the footpath of the reference symbol to be measured of detection threshold; Initial time position for the footpath of reference symbol to be measured that detection is obtained in receive window, the unit as configuration to the initial time position of the Measuring Time of Home eNodeB.
The embodiment of the present invention also provides a kind of method for Home eNodeB allocating and measuring time original position, comprise: measuring for Home eNodeB being carried out to the downlink reference signal process to be measured that synchronous target BS sends, respectively coherent detection is carried out in the footpath of each reference symbol to be measured in receive window, obtain the footpath of the reference symbol to be measured that testing result is the highest; The initial time position of the footpath of the reference symbol to be measured that detection is obtained in receive window, the initial time position as configuration to the Measuring Time of Home eNodeB.
Corresponding, the embodiment of the present invention also provides a kind of device for Home eNodeB allocating and measuring time original position, comprise: for measuring for Home eNodeB being carried out to the downlink reference signal process to be measured that synchronous target BS sends, respectively coherent detection is carried out in the footpath of each reference symbol to be measured in receive window, obtain the unit in the footpath of the reference symbol to be measured that testing result is the highest; Initial time position for the footpath of reference symbol to be measured that detection is obtained in receive window, the unit as configuration to the initial time position of the Measuring Time of Home eNodeB.
The give chapter and verse uplink and downlink timeslot ratio configuration information of system of the embodiment of the present invention, for Home eNodeB is configured for the Measuring Time length that wireless environment or the environment of eating dishes without rice or wine are measured, thereby be embodied as the Home eNodeB allocating and measuring time so that wireless environment is around measured, and and then make up standardization body and how also not yet to formulate the blank for the scheme of Home eNodeB allocating and measuring time.In addition the scheme for the Home eNodeB allocating and measuring time that the embodiment of the present invention provides can be in the situation that can ensureing measurement quality, saving resource expense, utilance and the systematic function of raising frequency spectrum resource.
In addition, the embodiment of the present invention give chapter and verse synchronization accuracy information and the crystal oscillator stability information of Home eNodeB, for Home eNodeB is configured for the measuring period that wireless environment or the environment of eating dishes without rice or wine are measured, thereby be embodied as the Home eNodeB allocating and measuring cycle so that wireless environment is around measured, and and then make up standardization body and how also not yet to formulate the blank for the scheme in Home eNodeB allocating and measuring cycle.
Brief description of the drawings
Below in conjunction with each accompanying drawing, the specific embodiment of the invention is carried out to concrete detailed explanation, wherein in each accompanying drawing:
The specific embodiment process chart that of providing for the embodiment of the present invention of Fig. 1 is Home eNodeB allocating and measuring time span;
Fig. 2 is the schematic diagram of existing TD-LTE frame structure;
Fig. 3 is 7 kinds of time slot ratio configuration schematic diagram in existing TD-LTE system.
Embodiment
Due to, in current 3GPP standard, also do not define the Measuring Time of Home eNodeB and the allocation plan of measuring period, the Measuring Time that existing LTE terminal configures under connection status is 6ms, within measurement period, LTE terminal will stop conventional up-downgoing data transmit-receive processing, the descending reference symbol of target BS is measured (in LTE system, 5ms is a radio half frame length, and the Measuring Time of 6ms can ensure when FDD terminal is measured TDD base station in asynchronous situation to measure effective downstream signal).But base station is different with terminal, because multiple mobile terminals need to be served in base station simultaneously, if Measuring Time unreasonable allocation will badly influence the normal use of mobile terminal, in addition because base station does not need to carry out intersystem handover, therefore do not need to configure long Measuring Time, therefore the Measuring Time for LTE terminal configuration of visible definition is not at present suitable for the Measuring Time of configuration Home eNodeB yet.
In addition for TDD system, because up-downgoing data are discontinuous transmissions, and uplink and downlink timeslot ratio is adjustable, for TD-SCDMA system, a 5ms subframe has the configuration of 5 kinds of uplink/downlinks (UL/DL) time slot ratio, 1: 5,2: 4,3: 3,4: 2,5: 1; For TD-LTE system, a 10ms radio frames has 7 kinds of typical time slot ratio configurations, when Home eNodeB carries out interferometry or synchro measure, only need measure the downlink reference signal of system, after having completed initial synchronisation, the ascending time slot that there is no need to take Home eNodeB is completely measured, and the ascending time slot that takies else if Home eNodeB is measured and will be increased the overhead bringing owing to measuring.If therefore the general Measuring Time by Home eNodeB is configured to a certain fixed value, will cause the problem such as the decline of measurement quality or the waste of ascending time slot, if for example Measuring Time is 5ms, by meaningless the ascending time slot that brings 20-80% expense; If Measuring Time is decided to be 2ms, by the information in whole effectively descending time slots that possibly cannot receive in a subframe, can cause thus expense excessive, that is to say that Measuring Time and the uplink and downlink timeslot ratio of Home eNodeB configuration do not have direct correlation if,, after the uplink and downlink timeslot ratio of system changes, may cause Measuring Time situation not enough or waste ascending time slot to occur.
For above-mentioned analytic process, the embodiment of the present invention proposes a kind of scheme of effective configuration Home eNodeB Measuring Time, with in the situation that can ensureing measurement quality, and saving resource expense, utilance and the systematic function of raising frequency spectrum resource.
The principle that realizes of the scheme for the Home eNodeB allocating and measuring time that wherein embodiment of the present invention proposes is: the uplink and downlink timeslot ratio configuration information of first determining system, particularly can be by intercepting the system information for Home eNodeB being carried out to synchronous target BS (macro base station or Home eNodeB can) broadcast, and from the system information listening to, parse the uplink and downlink timeslot ratio configuration information of system, thereby determine the uplink and downlink timeslot ratio configuration information of system; And according to the uplink and downlink timeslot ratio configuration information of determining, for Home eNodeB is configured for the Measuring Time length that wireless environment or the environment of eating dishes without rice or wine are measured.
Further, according to the uplink and downlink timeslot ratio configuration information of determining, for Home eNodeB is configured for the Measuring Time length that wireless environment or the environment of eating dishes without rice or wine are measured, can be, but not limited to following three kinds of concrete implementations:
First kind of way: the minimum reference symbol number that is first defined as reaching the required measurement of the desired precision of synchronized algorithm that Home eNodeB adopts, again according to the above-mentioned uplink and downlink timeslot ratio configuration information of determining, determine the descending time slot number or the descending sub frame number that comprise a radio frames, and the reference symbol number that can be used in measurement comprising respectively in each descending time slot or descending sub frame; And then according to above-mentioned definite minimum reference symbol number, and the descending time slot comprising a radio frames or descending sub frame number, and the reference symbol number that can be used in measurement comprising respectively in each descending time slot or descending sub frame, be defined as reaching continuous descending time slot or the descending sub frame number of the required measurement of the desired precision of synchronized algorithm that Home eNodeB adopts; Then by the descending time slot of determining or time span corresponding to descending sub frame number, as configuration to Home eNodeB the Measuring Time length for wireless environment or the environment of eating dishes without rice or wine are measured.
The desired precision of synchronized algorithm that for example Home eNodeB adopts is Ts, for the minimum reference symbol number that reaches the required measurement of the desired precision Ts of synchronized algorithm that Home eNodeB adopts is N, according to the system uplink and downlink timeslot ratio configuration information of determining, can determine the descending time slot or the descending sub frame number Z that comprise a radio frames, and the reference symbol number that can be used in measurement comprising respectively in each descending time slot or descending sub frame is M; Continuous descending time slot or the descending sub frame number that can determine as reaching the required measurement of the desired precision Ts of synchronized algorithm that Home eNodeB adopts are that N/M rounds up, the corresponding time span of number of time slot that so just N/M can be rounded up and obtain, the Measuring Time length of wireless environment or the environment of eating dishes without rice or wine being measured with work to Home eNodeB as configuration.But configuration should be the descending time slot length summation comprising in a radio frames (length of a radio frames of LTE system is 10ms) or a radio half frame (in LTE system, the length of a radio half frame is 5ms) to the upper limit of the Measuring Time length of Home eNodeB, and the Measuring Time length of distributing to Home eNodeB should not exceed this descending time slot length summation.
The second way: first according to the uplink and downlink timeslot ratio configuration information of determining, determine time span corresponding to descending time slot in a radio frames, in the time span of determining, select corresponding time span, Measuring Time length as configuration to Home eNodeB, as can be seen here, configuration should be the descending time slot or the descending sub frame length summation that in a radio frames or a radio half frame, comprise to the upper limit of the Measuring Time length of Home eNodeB, and the Measuring Time length of distributing to Home eNodeB should not exceed this descending time slot length summation.When this external this system is LTE system, the time span of selecting is at least a time span that OFDM symbol is corresponding, in the time that this system is TD-SCDMA system, the time span of selecting is at least a time span that time slot is corresponding, and the Measuring Time length of distributing to Home eNodeB has lower limit to require.
The third mode: first according to definite uplink and downlink timeslot ratio configuration information, determine the descending time slot that comprises or number and the position thereof of descending sub frame in a radio frames, and then according to the number of the descending time slot of determining or descending sub frame and positional information thereof, in a radio frames, select continuous or discrete descending time slot or descending sub frame, and the descending time slot selecting or descending sub frame are configured to multicast broadcast single frequency network (MBSFN, Multicast Broadcast Single Frequency Network) time slot or subframe; Then the MBSFN time slot of configuration or subframe are used for to the Measuring Time length of measuring to Home eNodeB as configuration.
As shown in Figure 1, provide for the embodiment of the present invention one the specific embodiment process chart that is Home eNodeB allocating and measuring time span, wherein concrete implementation procedure is as follows:
Step 10, Home eNodeB start is processed;
Step 11, after Home eNodeB start, monitors wireless environment around, comes select target base station synchronously process by the intensity of synchronizing signal coherent detection;
Step 12, detect the primary synchronization channel signal (PSS of target BS, Primary SynchronizationSignal), to realize 5ms frame synchronization, and detect the auxiliary synchronization channel signal (SSS of target BS, Secondary Synchronization Signal), to realize 10ms frame synchronization;
Step 13, detects common pilot signal (CRS, Common Reference Signal), and carries out channel estimating as basis taking the common pilot signal detecting;
Step 14, detects the upper system information of broadcasting of target BS broadcast channel (PBCH, PhysicalBroadcast Channel) according to channel estimation results;
Step 15, reads the uplink and downlink timeslot ratio configuration information of TDD system in the subframeAssignment parameter in the system information block SIB1 from the system information detecting;
Step 16, according to the uplink and downlink timeslot ratio configuration information reading, for Home eNodeB is configured for the Measuring Time length to wireless environment is measured around.Wherein configure the total length that should not exceed descending time slot in a radio frames or radio half frame or descending sub frame (comprising the descending time slot in special time slot) to the Measuring Time length upper limit of Home eNodeB, lower limit is at least a time slot (for TD-SCDMA system) or an OFDM symbol (for LTE system); For example, for TD-LTE Home eNodeB, for fear of hindering the reception of terminal to broadcast message, affect cell reselection or the performance of handoffs of terminal from macro base station to Home eNodeB, can select to remove the descending time slot length summation outside the TS0 subframe that comprises broadcast channel in a 5ms frame, as the Measuring Time length configuring to TD-LTE Home eNodeB.
Taking TD-LTE Home eNodeB as example, after Home eNodeB start, first intercept wireless environment around, the PSS receiving, SSS signal are carried out to coherent detection, find best macro base station or the Home eNodeB of received signal quality and carry out air interface synchronization; Complete 5ms frame synchronization by the PSS signal listening to, then complete 10ms frame synchronization by the SSS signal listening to; The common pilot signal CRS of receiving target base station after frame synchronization, and carry out channel estimating according to the common pilot signal CRS receiving, according to the system information of the upper broadcast of channel estimation results retrieval demodulation broadcast channel PBCH, read the TDD uplink and downlink timeslot ratio configuration information in the SIB1 in the system information that demodulation obtains, for example, DL: UL=2: 2; Enter afterwards after normal operating conditions, Home eNodeB need to regularly receive the down public guide frequency signal of target macro base station or target Home eNodeB, synchronously maintain to realize, only have after target macro base station or target Home eNodeB are closed, just need to re-start above-mentioned synchronous search processing.Unified because the uplink and downlink timeslot ratio of TDD system is configured in same geographic area, the configuration of system uplink and downlink timeslot ratio that current Home eNodeB is determined can be used as near network up and down time slot ratio configuration Home eNodeB, and carrying out re-synchronization search also no longer needs again to resolve system information that target BS broadcasts on the broadcast channel uplink and downlink timeslot ratio configuration information with reading system; Home eNodeB can be according to definite system uplink and downlink timeslot ratio configuration information, allocating and measuring time span.Describe as an example of the tdd frame structure shown in Fig. 2 example, when determining DL: UL=2: 2 time, Measuring Time length can be configured to 1ms, only measure the CRS signal on generic downlink time slot TS4, or Measuring Time length is configured to 2ms, measure the CRS signal in TS0 and TS4, other 3ms frame in 5ms frame can normally be worked, and can effectively reduce the expense of Home eNodeB for measuring.If considered in the time that the cycle that synchronously maintains is longer, between Home eNodeB and target BS, there is certain synchronous error, and multidiameter delay, the PDSCH signal transmitting in special time slot in addition also may comprise CRS signal, also can be 3ms by Measuring Time length setting, measure the CRS signal in TS0, DwPTS, TS4.
As fully visible, due to the self character of TDD system, for preventing that time-slot cross from disturbing, the configuration of the whole network uplink and downlink timeslot ratio in a geographic area is all identical under normal circumstances, therefore the scheme for the Home eNodeB allocating and measuring time that the embodiment of the present invention proposes just has versatility and realizability, the Measuring Time length configuring according to definite system uplink and downlink timeslot ratio, can be used for measuring the downlink reference signal of other base station equally.In addition, the Measuring Time length configuring according to system uplink and downlink timeslot ratio is in having realizability and versatility, can also effectively reduce the Radio Resource expense for measuring, for example, for 7 kinds of time slot ratio configurations in the TD-LTE system shown in Fig. 3, the embodiment of the present invention can be saved the measurement expense of 20-80%.
Further, the initial time position of the above-mentioned Measuring Time length for Home eNodeB configuration can be determined by the position of the descending reference symbol of measurement target base station, can be, but not limited to particularly determine by following two kinds of modes:
First kind of way: first measuring for Home eNodeB being carried out to the downlink reference signal process to be measured that synchronous target BS sends, successively coherent detection is carried out in the footpath of each reference symbol to be measured in receive window, obtain the footpath that first exceedes the reference symbol to be measured of detection threshold; And then the initial time position of the footpath of the reference symbol to be measured that detection is obtained in receive window, the initial time position as configuration to the Measuring Time of Home eNodeB.
The second way: first measuring for Home eNodeB being carried out to the downlink reference signal process to be measured that synchronous target BS sends, respectively coherent detection is carried out in the footpath of each reference symbol to be measured in receive window, obtain the footpath of the reference symbol to be measured that testing result is the highest; And then the initial time position of the footpath of the reference symbol to be measured that detection is obtained in receive window, the initial time position as configuration to the Measuring Time of Home eNodeB.
For example, if when Home eNodeB carries out air interface synchronization selection be the primary/secondary synchronizing signal of target BS, the original position of Measuring Time can be arranged on to the moment that primary/secondary synchronizing signal starts; If what select is the common pilot signal of target BS, the original position of Measuring Time can be arranged on to the zero hour of a certain descending time slot in common pilot signal.
In addition, implement separately the embodiment of the above-mentioned original position for the Home eNodeB allocating and measuring time, also within the protection range of the claims in the present invention.
Further, can also and then require and crystal oscillator stability and the system wireless frame length value etc. of Home eNodeB self according to the synchronization accuracy of Home eNodeB, for Home eNodeB is configured for the measuring period of carrying out radio environment measurements, layoutprocedure is as follows particularly:
First determine the crystal oscillator stability information of the desired synchronization accuracy information of Home eNodeB and Home eNodeB self; Then according to definite synchronization accuracy information and crystal oscillator stability information, for Home eNodeB is configured for the measuring period that wireless environment or the environment of eating dishes without rice or wine are measured.Need particularly according to definite crystal oscillator stability information, determine two maximum frequency error values between Home eNodeB, again according to definite maximum frequency error value, determine two maximum time error amounts between Home eNodeB, and then ask for the quotient between above-mentioned definite synchronization accuracy information and maximum time error amount, then configure the quotient of asking for as Cycle Length value to Home eNodeB with the measuring period of doing wireless environment or the environment of eating dishes without rice or wine to measure.
For example, if the synchronization accuracy of Home eNodeB requires as Ts (unit microsecond, as 3us), the crystal oscillator stability of Home eNodeB self be P (unit is 1,000,000/, as 0.25ppm, in time domain, the maximum time error in a second is 0.25us), the maximum time error between two Home eNodeB will be 2P (as 0.5us), need the longest Ts/2P (3/0.5=6s) of being measuring period of configuration.
For reaching better effect, can also use the radio frames length value of system to configuring to adjusting the measuring period of Home eNodeB, particularly when judge for Home eNodeB configuration measuring period the radio frames length value that length value is system integral multiple time, can select do not adjust the measuring period to configuring for Home eNodeB; And when judging while not being the integral multiple of radio frames length value of system for length value measuring period of Home eNodeB configuration, can and then ask for the measuring period length value and the quotient of system wireless frame length value of configuration to Home eNodeB, and this quotient is rounded downwards, then by long-pending to the value obtaining after rounding and system wireless frame length value, as the new measuring period for wireless environment or the environment of eating dishes without rice or wine are measured for Home eNodeB configuration, thereby reach configuration to the object of adjusting the measuring period of Home eNodeB.
For example, in the time that the radio frames length of system is Tr (as 10ms), because above-mentioned length 6s measuring period for Home eNodeB configuration is the integral multiple of 10ms, there will not be due to measuring period and radio frames length inconsistent produce after several radio frames, measure the problem that deviation appears in time slot position, thereby cause measuring.If be 12ms the longest measuring period that the above-mentioned synchronization accuracy according to Home eNodeB requires and crystal oscillator stability draws, and the radio frames length of system is 10ms, 12ms measuring period asking for can be adjusted into 10ms, to require to obtain compromise between sequential stability at synchronization accuracy.
If the above-mentioned Measuring Time length for measuring for Home eNodeB configuration is made up of MBSFN time slot or subframe, for can be MBSFN time slot or the integral multiple in sub-frame configuration cycle the measuring period for measuring of Home eNodeB configuration.
In addition, implement separately the above-mentioned embodiment for the Home eNodeB allocating and measuring cycle, also within the protection range of the claims in the present invention.
Here it is emphasized that; the above-mentioned proposition of the embodiment of the present invention be the scheme of Home eNodeB allocating and measuring time, for the scheme in Home eNodeB allocating and measuring cycle, be the scheme of Home eNodeB allocating and measuring time original position; can carry out according to actual needs combination in any use, three schemes of above-mentioned proposition and the combination in any of three schemes are all within the protection range of the claims in the present invention.
In addition; have above-mentioned proposition for the device of Home eNodeB allocating and measuring time function, for the device of Home eNodeB allocating and measuring periodic function, be the device of Home eNodeB allocating and measuring time original position function; also within the protection range of the claims in the present invention; these devices can be placed in existing Home eNodeB, have like this household base station device of above-mentioned corresponding function also within the protection range of the claims in the present invention.
The embodiment of the present invention is introduced " TDD Home eNodeB is configured Measuring Time according to system uplink and downlink timeslot ratio " or " Measuring Time of TDD Home eNodeB is adjusted according to system uplink and downlink timeslot ratio " in family's base station measurement time and measuring period in allocation plan.And further suggestion adopts mode with mapping table Measuring Time, the Measuring Time original position to Home eNodeB to be configured, according to 7 kinds of time slot ratio configuration schematic diagram in existing TD-LTE system in above-mentioned Fig. 3, following table 1 has provided a mapping table example, form provided a kind of future may be in specification Measuring Time to Home eNodeB configuration, Measuring Time starting position, the configuration format of measuring period etc.The embodiment of the present invention it is desirable to can be for different system uplink and downlink timeslot ratios in specification, for Home eNodeB configures original position or the measuring period of different Measuring Time, Measuring Time.According to actual performance, can delete all possible situation of listing in this table 1, for example corresponding time slot ratio is 0 o'clock, if the Measuring Time (continuous) of configuration is 2ms, can select TS0+TS1 or TS5+TS6 to measure, and due to TS0 carrying be broadcast message PBCH, if may destroy the reception of broadcast channel with this time slot measurement, likely final choice TS5+TS6 measures, and corresponding Measuring Time original position is set to TS5.In standard formulation process by according to the synchronized algorithm ability of Home eNodeB, and all situations of listing in the his-and-hers watches 1 such as other factors screens, for example, ensure the normal receiving broadcasting information of terminal if be defined as, TS0 will be prohibited to be configured to Measuring Time, the option that comprises TS0 can be deleted, to simplify specification; If the longest Measuring Time of regulation can not exceed 3ms in a 10ms radio frames, the option that exceedes 3ms Measuring Time that time slot ratio can be configured in 2～6 (configuration2-6) is deleted.
Table 1:
| Time slot ratio configuration | Measuring Time | Original position | Cycle |
| 0 | 1ms(TS0/1/5/6) | TS0/1/5/6 | TBD |
| 2ms(TS0，1/5，6) | TS0/5 | ||
| 1 | 1ms(TS0/1/4/5/6/9) | TS0/1/4/5/6/9 | TBD |
| 2ms (TS0，1/TS4，5/TS5 ，6/TS9，0) | TS0/4/5/9 | TBD | |
| 3ms (TS4，5，6/TS9，0，1) | TS4/9 | TBD | |
| 2 | ... | ... | ... |
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (16)
1. be the method for Home eNodeB allocating and measuring time, it is characterized in that, comprising:
Determine the uplink and downlink timeslot ratio configuration information of system;
According to definite uplink and downlink timeslot ratio configuration information, determine number and the position thereof of time span, descending time slot or descending sub frame that in radio frames descending time slot or descending sub frame are corresponding, and according to definite descending time slot or time span corresponding to descending sub frame, or according to definite descending time slot or the number of descending sub frame, or according to the number of definite descending time slot or descending sub frame and position thereof, for Home eNodeB is configured for the Measuring Time length that wireless environment or the environment of eating dishes without rice or wine are measured.
2. the method for claim 1, is characterized in that, determines the uplink and downlink timeslot ratio configuration information of system, specifically comprises:
Intercept the system information for Home eNodeB being carried out to synchronous target BS broadcast; And
From the system information listening to, parse the uplink and downlink timeslot ratio configuration information of system.
3. the method for claim 1, is characterized in that, according to definite descending time slot or time span corresponding to descending sub frame, for Home eNodeB is configured for the Measuring Time length of measuring, comprising:
In definite time span, select corresponding time span, be used for the Measuring Time length of measuring as configuration to Home eNodeB.
4. method as claimed in claim 3, is characterized in that, in the time that described system is LTE system, the time span of selection is at least a time span that OFDM symbol is corresponding;
In the time that described system is TD-SCDMA system, the time span of selection is at least a time span that time slot is corresponding.
5. the method for claim 1, is characterized in that, according to the number of definite descending time slot or descending sub frame and position thereof, for Home eNodeB is configured for the Measuring Time length of measuring, comprising:
According to the number of definite descending time slot or descending sub frame and position thereof, in a radio frames, select descending time slot or descending sub frame; And
The descending time slot of choosing or descending sub frame are configured to multicast broadcast single frequency network time slot or subframe;
The multicast broadcast single frequency network time slot of configuration or subframe are used for to the Measuring Time length of measuring to Home eNodeB as configuration.
6. the method for claim 1, is characterized in that, according to definite descending time slot or the number of descending sub frame, for Home eNodeB is configured for the Measuring Time length of measuring, comprising:
Be defined as reaching the minimum reference symbol number of the required measurement of the desired precision of synchronized algorithm that Home eNodeB adopts;
According to definite uplink and downlink timeslot ratio configuration information, determine the reference symbol number that can be used in measurement comprising respectively in each descending time slot or descending sub frame;
According to the minimum reference symbol number of determining, and the descending time slot comprising a radio frames or descending sub frame number, and the reference symbol number that can be used in measurement comprising respectively in each descending time slot or descending sub frame, be defined as reaching continuous descending time slot or the descending sub frame number of the required measurement of the desired precision of synchronized algorithm that Home eNodeB adopts;
By definite descending time slot or time span corresponding to descending sub frame number, be used for the Measuring Time length of measuring to Home eNodeB as configuration.
7. the method for claim 1, is characterized in that, also comprises:
Determine the initial time position of described Measuring Time length.
8. method as claimed in claim 7, is characterized in that, determines the initial time position of described Measuring Time length, specifically comprises:
Measuring for Home eNodeB being carried out to the downlink reference signal process to be measured that synchronous target BS sends, successively coherent detection is carried out in the footpath of each reference symbol to be measured in receive window, obtain the footpath that first exceedes the reference symbol to be measured of detection threshold;
The initial time position of the footpath of the reference symbol to be measured that detection is obtained in receive window, as the initial time position of described Measuring Time length.
9. method as claimed in claim 7, is characterized in that, determines the initial time position of described Measuring Time length, specifically comprises:
Measuring for Home eNodeB being carried out to the downlink reference signal process to be measured that synchronous target BS sends, respectively coherent detection is carried out in the footpath of each reference symbol to be measured in receive window, obtain the footpath of the reference symbol to be measured that testing result is the highest;
The initial time position of the footpath of the reference symbol to be measured that detection is obtained in receive window, as the initial time position of described Measuring Time length.
10. the method for claim 1, is characterized in that, also comprises:
For Home eNodeB is configured for the measuring period of measuring.
11. methods as claimed in claim 10, is characterized in that, for Home eNodeB is configured for the measuring period of measuring, specifically comprise:
Determine the desired synchronization accuracy information of Home eNodeB, and
Determine the crystal oscillator stability information of Home eNodeB self;
According to definite synchronization accuracy information and crystal oscillator stability information, for Home eNodeB is configured for the measuring period of measuring.
12. methods as claimed in claim 11, is characterized in that, according to definite synchronization accuracy information and crystal oscillator stability information, for Home eNodeB is configured for the measuring period of measuring, specifically comprise:
According to definite crystal oscillator stability information, determine two maximum frequency error values between Home eNodeB;
According to definite maximum frequency error value, determine two maximum time error amounts between Home eNodeB;
Ask for the quotient between definite synchronization accuracy information and maximum time error amount;
Configure the quotient of asking for as Cycle Length value to Home eNodeB as the measuring period of measuring.
13. methods as claimed in claim 11, is characterized in that, also comprise:
Determine the radio frames length value of system; And
Radio frames length value based on definite is to adjusting the measuring period configuring for Home eNodeB.
14. methods as claimed in claim 13, is characterized in that, the radio frames length value based on definite, to adjusting the measuring period configuring for Home eNodeB, specifically comprises:
Whether length value measuring period that is judged as Home eNodeB configuration is the integral multiple of definite radio frames length value, and in judged result when being, to not adjusting the measuring period configuring for Home eNodeB; Otherwise
Ask for described measuring period of length value and the quotient of radio frames length value, and described quotient is rounded downwards; And
By long-pending to the value obtaining after rounding and definite radio frames length value, as the new measuring period for measuring configuring for Home eNodeB.
15. methods as claimed in claim 5, is characterized in that, also comprise:
For Home eNodeB is configured for the measuring period of measuring, be wherein the integral multiple in multicast broadcast single frequency network time slot or sub-frame configuration cycle this measuring period of configuration.
16. 1 kinds is the device of Home eNodeB allocating and measuring time, it is characterized in that, comprising:
Be used for the unit of the uplink and downlink timeslot ratio configuration information of determining system;
Be used for according to definite uplink and downlink timeslot ratio configuration information, determine number and the position thereof of time span, descending time slot or descending sub frame that in radio frames descending time slot or descending sub frame are corresponding, and according to definite descending time slot or time span corresponding to descending sub frame, or according to definite descending time slot or the number of descending sub frame, or according to the number of definite descending time slot or descending sub frame and position thereof, for Home eNodeB is configured for the unit of the Measuring Time length that wireless environment or the environment of eating dishes without rice or wine are measured.
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| CN200910161962.4A CN101998483B (en) | 2009-08-26 | 2009-09-07 | Method and device for configuring measurement time for home base station |
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| WO2013071511A1 (en) * | 2011-11-18 | 2013-05-23 | 富士通株式会社 | Information obtaining method, base station, and terminal device |
| CN103781125A (en) * | 2012-10-24 | 2014-05-07 | 普天信息技术研究院有限公司 | Method for adjusting uplink and downlink subframe configuration in heterogeneous network |
| CN103098412B (en) * | 2012-10-29 | 2015-04-29 | 华为技术有限公司 | Initialization method, device and system |
| CN104219706B (en) * | 2013-06-04 | 2018-08-24 | 中国移动通信集团广东有限公司 | The method and mobile terminal of counterparting communications mode parameter are detected in double-communication mode |
| CN104219698B (en) * | 2014-09-01 | 2017-10-31 | 京信通信系统（中国）有限公司 | Intercepting method, device and base station under base station networking |
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| CN101166133A (en) * | 2007-09-26 | 2008-04-23 | 中兴通讯股份有限公司 | Location limit method and system for home base station |
| CN101365208A (en) * | 2007-08-07 | 2009-02-11 | 中兴通讯股份有限公司 | Automatic installation method for household base station |
| CN101365216A (en) * | 2007-08-08 | 2009-02-11 | 中兴通讯股份有限公司 | Position limiting method for wireless communication apparatus |
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| US8369859B2 (en) * | 2006-05-22 | 2013-02-05 | Alcatel Lucent | Controlling transmit power of picocell base units |
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| CN101365208A (en) * | 2007-08-07 | 2009-02-11 | 中兴通讯股份有限公司 | Automatic installation method for household base station |
| CN101365216A (en) * | 2007-08-08 | 2009-02-11 | 中兴通讯股份有限公司 | Position limiting method for wireless communication apparatus |
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